/**
* Move an element into another as its child.
*
* @param $model|NestedSet_Model Nested set model
* @param $element|array Element to move
* @param $reference|array Reference element to move into
*
* @return $this
*/
public function moveInto(NestedSet_Model $nestedset, array $element, array $reference)
{
$db = $nestedset->getDb();
try {
// Check it can be moved into. XXX change when we'll get one level
if ($element[0][$nestedset->getStructureLeft()] > $reference[0][$nestedset->getStructureLeft()] && $element[0][$nestedset->getStructureLeft()] < $reference[0][$nestedset->getStructureRight()]) {
// already into
return false;
}
$db->beginTransaction();
// first make room into reference
// @TODO make a protected method to make room
// with must always be a pair number
$elementWidth = $nestedset->getNodeWidth($element[0][$nestedset->getStructureId()]);
// move right
$referenceRight = $reference[0][$nestedset->getStructureRight()];
$db->query("\n UPDATE {$nestedset->getTableName()}\n SET {$nestedset->getStructureRight()} = {$nestedset->getStructureRight()} + {$elementWidth}\n WHERE {$nestedset->getStructureRight()} >= {$referenceRight};\n ");
// move left
$db->query("\n UPDATE {$nestedset->getTableName()}\n SET {$nestedset->getStructureLeft()} = {$nestedset->getStructureLeft()} + {$elementWidth}\n WHERE {$nestedset->getStructureLeft()} > {$referenceRight};\n ");
// then move element (and it's children)
$element = $nestedset->getElement($element[0][$nestedset->getStructureId()]);
$elementIds = array();
foreach ($element as $one) {
array_push($elementIds, $one[$nestedset->getStructureId()]);
}
$elementIds = implode(', ', $elementIds);
$difference = $reference[0][$nestedset->getStructureRight()] - $element[0][$nestedset->getStructureLeft()];
$db->query("\n UPDATE {$nestedset->getTableName()}\n SET {$nestedset->getStructureLeft()} = {$nestedset->getStructureLeft()} + {$difference},\n {$nestedset->getStructureRight()} = {$nestedset->getStructureRight()} + {$difference}\n WHERE {$nestedset->getStructureId()} IN ({$elementIds});\n ");
// move what was on the right of the element
$db->query("\n UPDATE {$nestedset->getTableName()}\n SET {$nestedset->getStructureLeft()} = {$nestedset->getStructureLeft()} - {$elementWidth}\n WHERE {$nestedset->getStructureLeft()} > {$element[0][$nestedset->getStructureLeft()]};\n ");
$db->query("\n UPDATE {$nestedset->getTableName()}\n SET {$nestedset->getStructureRight()} = {$nestedset->getStructureRight()} - {$elementWidth}\n WHERE {$nestedset->getStructureRight()} > {$element[0][$nestedset->getStructureRight()]};\n ");
$db->commit();
} catch (Exception $e) {
$db->rollBack();
throw $e;
}
}
